What does the Glasgow Coma Scale measure?

• A. A tool to quantify a patient's level of consciousness
• B. A method to assess blood oxygen saturation
• C. A scoring system for pain intensity
• D. A scale for respiratory rate

Answer: (A)

The main idea being tested is how conscious a patient is. The Glasgow Coma Scale is a tool to quantify a patient’s level of consciousness by assessing three aspects: eye opening, verbal response, and motor response. Each aspect has its own score, and the three are added together to give a total that ranges from 3 to 15. A higher total means the patient is more awake and responsive; a lower total indicates a deeper level of unconsciousness or coma. This scale is commonly used in acute brain injury to establish a baseline, monitor changes over time, and help guide triage and prognosis. It is not used to measure blood oxygen saturation, pain intensity, or respiratory rate, which are evaluated with other methods. Be aware that sedation or intubation can influence the verbal score and the scale doesn’t assess cognitive function or pinpoint specific brain areas.